Top Categories

2.0 Long Sleeve Heathered Form Fit

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirChannelDUCT

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack…

Read More

The 3D wave-like XO-AirChannelDUCT™ construction on the outside of the shoulder, arm area and sides of the shirt, helps disperse the pressure from a backpack or jacket over a wider surface area. The inside ducts act like a bridge creating maximum air flow, allowing sweat to be effectively ventilated by thermal dynamics in warm or cold weather. During rest and recovery periods, the inside ducts trap warm air released by the body, providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-SHIELD

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to…

Read More

The 3D XO-SHIELD™ system provides you with sweat traps and inner and outer air flow channels on the back. These provide maximum ventilation and insulation to keep you comfortable and performing better. During activity, a thin layer of sweat forms on the skin and any excess sweat is absorbed by the sweat traps. Sweat is evaporated by the inner and outer air flow channels for a controlled and effective cooling. During rest and recovery periods, the inner air channel pockets trap warm air released by the body. They provide a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-AirFlowSPHERE

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface…

Read More

The front, back and sides of the shirt have built in XO-AirFlowSPHERES™ that enhance climate control. They allow sweat to spread rapidly over a large surface area and with constant air flow they help keep the body cooler for quick and effective venting. The constant air flow movement draws moisture away from the skin, keeping the athlete very comfortable. During rest and recovery periods, the inside sphere's trap warm air released by the body providing a layer of insulation that helps reduce the risk of post chill after your activity.

×

XO-ElbowFLEXOR

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure…

Read More

The long sleeve base layer incorporates the XO-ElbowFLEXOR™ in the elbow area to help with increased air flow, cushioning and insulation once the 3D structure is flexed. Complete freedom of movement during your sporting activities.

×

XO-HVAC System

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The…

Read More

The 3D XO-HVAC System™ provides sweat traps under the arm allowing for sweat to be quickly drawn away from the skin to the surface for fast evaporation. The unique ventilation and circulation ducts under the arm carry excess moisture away from the skin and allow for fresh air to be exchanged quickly, enhancing thermal dynamics.

Wear it on its own in hot weather, or as a base layer in cool weather.

The breathable XOSKIN™ technology fabric is highest rated for anti-odor/skin wellness, and for taking moisture management, skin protection, abrasion and comfort a quantum leap forward during high energy levels. The body-mapped sweat traps and air channels promote maximum airflow to help you stay comfortable.

Say no to chafing, this shirt's body is seam-free.

Provides full range of motion.

Preshrunk so you don't kick your dryer on laundry day.

Conforms to the body’s contours. Unlike other form fit and compression shirts on the market, our 3D XOSKIN™ form fit base layers stretch approximately 4 inches in order to conform to your body without the use of any Spandex® or Lycra®. These synthetic fibers, which are found in most compression products, add weight to a garment. Garments containing these fibers can elevate the tempature of your body, generate excessive moisture and leave you uncomfortable. Our mission in the design of our form fit tops was to bring to you a fitted base layer that will not only compliment your torso, but will guarantee your comfort during any activity.

When your adventure is calling, we answer with gear that goes the distance. We engineered this base layer from light-weight XOSKIN™ technology fabric that is highest rated for skin comfort. The construction improves internal abrasion and skin wellness, enhances breathability, controls odor, manages moisture, dries rapidly and decreases weight. It also allows the garment to slide more easily over your skin for maximum comfort. We body-mapped this shirt with sweat traps and air channels so air can flow at maximum speed to enhance thermal dynamics. Get ready for the long haul!

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About XOSKIN™

At XOSKIN™ we are revolutionizing performance apparel with ground breaking technology for your comfort. We give special attention to the weight and compressibility of the material. Our designs follow the body’s contours providing ergonomic shaping with reduced friction and enhanced movement. The trailblazing science behind our USPTO Patented RAPIDriCOPPER™ seamless innovations are reinventing how fiber, fabric and engineered 3D knitted construction function together to provide the best ultra, road and trail running base-layers, compression run shorts, capris, race and recovery compression socks and sleeves, all of which have been tested at some of the hardest races on the planet.